Solid gelatinous product.



: To all whom it may concern:

I circulation.

PAUL AskEnAsY, or KARLSRUHE, GERMANY, Assienon 'ro AKTIENGESELLSCHAFT Fun CHEMISCHE rnonucm VORMALS H. SCHEIDEMANDEL, on BERLIN, GERMANY,

IA. CORPORATION OF GERMANY.

SOLID GELATINOUS PRODUCT.

No Drawing;

Be it known that I, Dr. PAUL AsKEnAsY, professor, chemist, a subject of the German Emperor, and resident of Karlsruhe, Baden, Germany, have. invented new and useful Solid Gelatinous Products, of which the fol- 4 lowing is a specification. v

Gelatinous substances, such as glue, gelaof powder manufactured by grinding such sheets or plates. The sheets or plates then'r- .Selves are generally obtained from solutions of the gelatinous substances. Y

My invention relates to a new gelatinous product iii-solid form and divided state, and

.Ilwill describe the new product indescribing tlie method of manufacturing it. This method consists in bringing the gelatinous material, when in a liquid state, in contact with a liquid which is unable .to dissolve said gelatinous material. The efi'ect of such treatment is that particles of gelatinous material, of substantially globular form are obtained; and these, under the conditions hereinafter stated, solidify and can be removed from the liquid, and the liquid may be used over'and over again. I,

The solidified globules of gelatinous ma-- terial, if containing solvents, for instance. water, may'be further treated so as to drive off the solvents from the gelatinous material, and to leavea hard product suitable for the market. One mode in whichthe method is employed includes the use of the liquid which does not dissolve gelatin, in a cooler state than the gelatinous material itself, and

preferably at a' temperature below the conulesare introduced, may be eifected con jjf u tinuously by proper means, for instance by" dissolve gelatin are benzene and other hydrocarbons, tri-. chlorethylene, tetrachlorid of carbon, carbon-bisulfid, benzyl-alcohol, etc. Broadly Suitable liquids that do not Specification of Letters Patent.

:the slower is Patente'd' Oct. 10,1916.

Application fiIed'October 19, 1915. Serial No.-56,817.

speaking practically all liquids may be used which are insoluble, or almost insoluble in water, this depending upon the fact that the ordinary gelatinous materials, the use of) which can be practicable commercially,- are treated while in tions.

The size of the globules may be-regulated at will, and depends generally on the velocgelatinous globules depends principally on the'difi'erences' in temperature and specific gravity between the two liquids employed.-

The nearer together the specific gravities,

through a column of liquid of a given the form of aqueous solu-- ty with which the gelatinousmaterial is introduced, the'pressure to which-it is subthe movement of the globules height. If the specific gravity of the cooling liquid is smaller than that of the gelatinous substance, the globules sink to the the top. 1

Since the specific gravity of a substance bottom; whereas, in the reverse case, the

depends also upon its temperature, it becomes possible to arrange conditions in such a way that the gelatinous globules, as long as they are comparatively warm, remain floating on. the top of the cooling liquid, but sink to bottom-when their specific gravity increases on cooling. This renders possible the use of. a method wherein, by suitably controlling'thespecific gravity of the cooling liquid, for instance by the propermixing of ities, the globules of gelatinous material are kept floating at the top of the cooling liquid in the beginning of the process, and only sink to bottom when they are solid or, at;

least solidified in the -quiter layers.

The method is applicable, not. only for pure gelatinous material, but. for mixtures of gelatinous material with other substances.

Especially food preparations or medicines may be, produced ,by usingthe new method in such a way that emulsions or solutions of 9O difl'erent liquids of diflerent specific. grava temperature of 50 incorporated into the gelatinous material, and thereafter introduced as a mixture into thecooling liquids. Also flavoring and coloring substances, or substances of other kinds, may be incorporated with gelatinous material, and brought into' divided solid form by the method herein described.

As illustrative examples, I would suggest the following:

(1.) A solution of gelatin at 0. containing 20% of gelatin is dropped from a tinned copper nozzle of 0.7 mm. in diameter into tetrachlorid of carbon at 10 0., While the tetrachlorid of carbon is maintained at this temperature by cooling. It is surprising to see that the globules of the gelatinous material do not adhere together even if the tetrachlorid of carbon is not sufiiciently cool to completely solidify the globules of the gelatinous material. The solidified globules are removed by a filter or in any other suitable manner. The adherent tetrachlorid of carbon is removed, for instance, by evaporating inwacuo, and may be recovered. The water can be removed from the globules of gelatin by evaporating in vacuo, or by drying the material in a ,stream'of dry air, or in any other convenient way.

(2.) -A solution of gelatin sweetened with sugar and perfumed and suitably colored is atomized by ejecting it from a suitable nozzle, and allowed to enter into cooled trichlorethylene. The small particles of gelatin, taking globular shape, form flour of gelatin, which may be continuously separated from the cooling liquid by filtration.

The trichlorethylene still adhering to thegelatin flour may be regained as previously described. The atomized gelatinous material might either enter directly into the liquid or may pass at first through the air.

(3.) A solution of animal glue of 25% at C. is allowed to drop into a cooling liquid'formed of a mixture of 1'ZO-parts of tetrachlorid of carbon and 100 parts of benzin; said cooling liquid being kept continuously at a temperature of about 10 C.

Depending upon the velocity with which the drops are introduced into the cooling liquid, and also depending upon the size of the aperture of the nozzle, globules of glue of different sizes and of substantially globular form are obtained, which, on entering the cooling liquid, float on or near the surface of the liquid, butsink to, the bottom after some moments when they have nearly attained the temperature of the surjet rounding cooling liquid.

The duration of flotation of the globules on or near. the surface of the cooling liquid,

and the velocity of sinking down to the bottom, may be regulated at will by suitable variation of thecomponents of the cooling mixture. This embodiment of the process very fine globules ing material of t If the gelatin solution is allowed to fall down in larger drops from a greater height into the cooling liquid, or if a strong jet of gelatin solution is impinged on the surface of the cooling liquid, or injected into the liquid itself, a considerable proportion of is produced, as well as larger globules. The several grades or sizes maybe separated from each other by sifting, so that a plurality of grades of material according to variable fineness is obtained. The sifting of the material is advisable in most cases because the globules formed may differ somewhat from each other in size,'although it is surprising to see that, under proper conditions, the size of the several globules is nearly uniform. Instead of injecting the gelatin solution into the cool: ing liquid, or instead of impinging it on the surface of the cooling liquid, its introduction into the cooling liquid may be also ef-- fected by centrifugal force. For instance, the gelatinous material may be introduced into a centrifugal drum the wall of which is formed by a filtering cloth, and such drum may be put into rotation" within the cooling liquid. Under the influence of centrifugal force, thecontents of the drum pass through the meshes of the filtering cloth I form, enter the cooltherein solid globular more conveniently than the thin sheets hitherto used.

The regular form of the gelatinous particles produced by this process allows easy ascertaining of the purity of the product without diflicult analysis. In this way adulterations of the material may be effectively discovered and prevented, because it would be practically impossible to secure adulterate same shape and appearance as that given to the gelatinous globules by the process of this invention.

I claim as my invention.

1. As a new article of manufacture a solid animal gelatinous product consisting of small particles of substantially globular shape. v

- 2. As a new article of manufacture a solid gelatinous product consisting of small particles of substantially globular shape containing non-gelatinous material and animal gelatinous material.

3. As a new article of manufacture a solid food preparation in a divided condition the elements of same consisting of small globules containing a food substance mixed with an animal gelatinous substance.

In testimony, that I claim the foregoing as my invention, I have signed my name in 10 presence of two witnesses, this fifteenth day of September 1915.

-DR. PAUL ASKENASY, PROFESSOR. Witnesses: I

HENRY HAsPER, LILLI FRANK. 

